One of Malcolm Turnbull’s inner sanctum was upbeat as journalists pored over the details of this week’s budget. ‘Labor’s got nowhere to go,’ he said. Judging from his demeanour in the Parliament House lock-up, Treasurer Scott Morrison shared this view. Or, more accurately, hopes this view was shared by his colleagues and, most importantly, the voters in coming weeks’ opinion polls. Make no mistake: Morrison’s fate and his prime minister’s hinge on just how well received is their spectacular political pirouette.